Derivative Instruments - Gross Fair Value of Derivative Positions (Detail) - USD ($) $ in Millions	Sep. 27, 2025	Sep. 28, 2024
Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	$ 275	$ 401
Derivative Asset, Counterparty Netting Offset	(260)	(330)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	(27)
Net Derivative Positions	15	44
Current Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	233	273
Current Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Current Assets | Derivatives designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	3	0
Current Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	39	110
Current Assets | Derivatives not designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	0	18
Other Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	635	280
Derivative Asset, Counterparty Netting Offset	(517)	(182)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Net Derivative Positions	118	98
Other Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	376	184
Other Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Other Assets | Derivatives designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	2	0
Other Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	168	2
Other Assets | Derivatives not designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement	89	94
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(1,219)	(1,427)
Derivative Liability, Counterparty Netting Offset	378	396
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	550	679
Net Derivative Positions	(291)	(352)
Other Current Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(407)	(164)
Other Current Liabilities | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(762)	(983)
Other Current Liabilities | Derivatives designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	0	(7)
Other Current Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(49)	(273)
Other Current Liabilities | Derivatives not designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(1)	0
Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(470)	(152)
Derivative Liability, Counterparty Netting Offset	399	116
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	10	0
Net Derivative Positions	(61)	(36)
Other Long-Term Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(208)	(149)
Other Long-Term Liabilities | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	0	0
Other Long-Term Liabilities | Derivatives designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	0	(1)
Other Long-Term Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	(262)	(2)
Other Long-Term Liabilities | Derivatives not designated as hedges | Other
Derivatives, Fair Value [Line Items]
Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement	$ 0	$ 0